Hampshire · England
Kentsboro New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Kentsboro and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracks appearing as a new home settles
- Kitchen sealant that has pulled off the wall
- New-build shower sealant that has already split
About our new build mastic in Kentsboro
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. If you’re still within the builder’s snagging or warranty period, tell them first, and if it isn’t put right, get in touch with us. Common call-outs are for shower seals failing in the first year or two and sealant work across a run of new homes, across windows & doors, show homes and bathrooms & en suites.
For a small place like Kentsboro, the journey and access are planned in advance, and the work itself is the same as on any site.
Whatever the size of the job, you get the same 12-month guarantee in Kentsboro and across Hampshire.
- Place
- Kentsboro (SO20)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours in a single home. In a small place like Kentsboro, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we work through your snagging list or plot schedule with you.
- Failed or untidy sealant is cut out completely.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Keep children and pets away from the work area
- Tell us if parking is tricky
- Move anything stored near the joints
Ask for a quote
To get a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before any work starts.
Related advice
Different surfaces, different methods
Show homes
Tired or marked sealant in a show home can be renewed. We cut it out and reseal neatly.
Skirting and floors
Where the floor meets a bath panel or kitchen plinth, the joint keeps mop water out. They get a flexible, water-resistant sealant.
Can I do it myself?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Kentsboro questions
Is Kentsboro in your area for new build mastic?
Yes. Our work covers London and the South East, and Kentsboro is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Is Kentsboro within the area you cover?
Yes, Kentsboro is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Will you just run a new bead over the existing one?
No. Fresh silicone does not stick to the old layer, so sealing over the top fails quickly. We cut the old bead out completely.
How long before the joint can be used?
Cure times vary by product. Before we leave, we will tell you the cure time.
Should I wait before resealing?
It depends on whether water is getting through. A leaking shower or bath seal should be redone right away, while small cosmetic gaps can wait a while.
Do you work through snagging lists?
Yes. Send it with pictures and we’ll quote for the sealant items. If something isn’t sealant, we will say so.
My new home is still under warranty. Should I contact you?
Start with your builder while their snagging or warranty period runs. If that does not work out, we are happy to quote and our work is guaranteed for a year.
Places near Kentsboro
What else we do in Kentsboro
Landlord and commercial work in Kentsboro
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
For anyone letting property in or around Kentsboro, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Deciding who is responsible under a builder’s warranty
- A tray or bath that isn’t properly supported, until it’s fixed
- Settlement cracks that need a surveyor
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Skirting & floors
- Plot handovers
- Show homes
- Kitchens
- Windows & doors
- Bathrooms & en suites
What we’re called out for in Kentsboro
New homes are full of moisture from plaster, screed and concrete, and it dries out over the first couple of years. As it does, timber shrinks and joints open, and sealant that can’t keep up splits.
These are the problems we are asked about most:
- Gaps between new skirting and floors
- Plot mastic for developers ahead of handover
- Cracked sealant around new window and door frames
- Gaps opening as the house dries out and settles
If you’ve bought a new home near Grateley station, the sealant around baths, showers and frames is worth checking in the first year or two.
What your quote should include
- Whether they’re fully insured
- Whether they seal over old material or remove it
- When the joint can take water or movement
- What happens if they find a problem under the old sealant
New build mastic in Kentsboro: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around Kentsboro, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Kentsboro is about 5 miles south-west of Andover, in Hampshire. We carry out new build mastic for homeowners, landlords and businesses in Kentsboro, as part of our work across Hampshire. Kentsboro is one of 683 towns and villages in Hampshire where we work. For nearby work, see our Southampton page (18 miles or so).
Here we cover the SO20 postcode area for new build mastic. Whether your property is on Mead Park Square, Upper Mead and Lower Mead or a nearby road, we can help. If you are just outside Kentsboro, we cover Over Wallop (2 miles south-west), Middle Wallop (2 miles south-west), Nether Wallop (2 miles south), Fox (2 miles north) and Red Rice (2 miles north-east). Further out, we also cover Winchester (13 miles south-east), Andover (5 miles north-east), Chandler's Ford (14 miles south-east), Romsey (12 miles south), Hyde (12 miles south-east) and Tidworth (7 miles north-west).
Near you in Kentsboro
For rail, the closest station is Grateley station, roughly 2.6 miles west of the centre. A little further out are Andover War Memorial Hospital (5 miles north-east). The countryside around Kentsboro includes Quarley Hill and Mill Lake.
Why deal with it now?
For developers, getting the sealant right first time saves return visits. Every return visit for a failed seal takes time, and they’re avoidable with good preparation. Older cottages and farmhouses around Kentsboro can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
The cost depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What you get with us
- We leave the area clean and tidy
- Homes, businesses and hotels
- Anti-fungal silicone where joints get wet
- Old sealant always removed completely
See our cost guide and what customers say.